Installation of electrical conductors



July 9g 1935. J. 1 MUSGRAVE ET AL 2,007,510

INSTALLATION OF ELECTRICAL CONDUCTORS Filed Sept. 2l, 1934' 2Sheets-Sheet 1 July 9, 1935. J. L. MUSGRAVE ET AL 2,007,610

INSTALLATION OF ELECTRICAL CONDUGTORS Filed Sept. 21, 1934 2Sheets-Sheet 2 J laLellieMlIttlwealulSidney(Jlarkllolmt,v

en InndonEngiand Selelnber 21, 1934, Serial N0. 744,976 In Great BritainSeptember 13, 1933 (Cl. 219--34i schim.

This invention relates to surface wiring for use in connection withelectrical installations, and refers in particular to the method ofconnecting up and fixing or securing conductors to the surface of aceiling or wall, being specially applicable for use in the electricalheating of rooms or buildings, although it can be readily adapted foruse with electrical lighting of rooms or buildings. The object of theinvention is to devise a system u of wiring whereby current can bedistributed from one or more supply points, for example on a ceiling, tofeed one or more points where it is required for use, by conductors sosecured to the surface of the ceiling as to render them practicallyinvisible by not interfering with the evenness of said surface, whilestill retaining easy accessibility thereto, and to the feed wiring.

According to this invention the main insulated wiring from the source ofsupply is brought preferably to a flush type connecting box in theceiling at a point convenient to the source of supply and reasonablyadjacent to the points of use.

I'he surface wiring, from this connecting box to the points of use,preferably consists of a conductor of ribbon section, e. g. tinnedcopper'ribbon suitably insulated where it enters lthe connecting box.

The tinned ribbon conductors may be supported on the surface of theceiling by say, a twoinch strip of gummed paper, or by direct adhesive,and may be then further supported by the usual finishing papers or othermaterials with which the whole ceiling is covered.

In order that the invention may be clearly understood we have appendedthe accompanying drawings.

Fig. 1 is a broken plan view showing the wiring of a ceiling, inaccordance with this invention, for a single heating panel.

Fig. 2 is a similar view showing the wiring to feed two panels.

Fig. 3 is a broken plan view showing the wiring of a ceiling where it isdesired to connect up four panels.

Fig. 4 is a broken plan View of a portion of a heating panel, on anenlarged scale, showing how the tinned copper ribbon conductors may beinsulated with paper or like material.

Referring to Fig. 1 where we have shown the wiring of the surface of aceiling using a single panel A, the flush type connecting box B, towhich the main insulating wiring b2 is brought from the source ofsupply, is situated adjacent to the points of use, the tinned ribbonconductors a4 being fed along the ceiling and attached to the bus-barsa5 on either side of said panel A by the use of a soldering iron.

At Fig. 2 we have shown the wiring of the surface of a ceiling to feedtwo panels A, A1. In this case the tinned ribbon conductor a*s is fedalong 5 the ceiling from the one pole of the connecting box B direct tothe busbar a'I of each panel, the tinned ribbon conductor as from theother pole of the connecting box B being carried along the ceiling andconnected up to the busbars a on the other side of the panels.

When it is desired to connect up, say for example four panels, twocentral ones A, A1, butting together, and one either side respectively,A2, A3 with a space between the adjacent panels A, Af and A1, A3, asshown by Fig. 3, we employ two connecting boxes B, B1, positioned in thespace between the side panels and the centre panels, the main insulatedwiring b2 being connected to the one pole in the box B1, and to bothpoles in the 2o box B. The tinned ribbon conductor am, after beingconnected to the connecting box B, is then carried across the ceilingand connected to the respective polarity busbars al1 of each panel inthe manner previously described. The second tinned ribbon a1 from theconnecting box B is then likewise connected to the busbars cl3 of thepanels A, A, and the timed ribbon a from the connecting box B1 isconnected to the busbars c1515 of the panels A1, A3.

In all cases the tinned copper ribbon conductors are supported on thesurface of the ceiling by, say, a two-inch strip oi. gummed paper D,shown in dotted lines, or other similar suitable material, or by directadhesive, being then further supported by the usual finishing materialswith which the panels and the whole ceiling are covered.

At Fig. 4 we have shown a portion of a panel, on an enlarged scale,demonstrating how the tinned ribbon conductors may be additionallyinsulated with a wrapping of paper or other material which will notprevent the general concealment of the ribbons when the final decorationis added.

What we claim as our invention and desire to secure by Letters Patentis 1. In a mural heating system, a flat panel electrical heater disposedon a plane mural surface, an outlet box in said surface and flushtherewith, a ribbon conductor iiatly contacting said surface betweensaid box and heater, and a flat body of non-conducting materialoverlying said conductor.

2. In a mural heating system, the combination of a flat panel electricalheater disposed on a plane mural surface, an outlet box in said surface2 momia and ush therewith, a ribbon conductor flatly and ush therewith,a ribben conductor atiy contacting said surface between said box andccntacting said surface between lsaid box and heater, and meansadhesively securing said ribbon heater. and a strip ot gummed paperapplied to conductor in fiat surface contact against said said surtaaeover said ribbon for holding' said 5 mural surface. o ribbon in atengagement therewith.'

3. In a mural heating system. the combinationl of a at panel electricalheater disposed on a v J0 LESLIE MUSGRAW.

piane mural surface, an outlet box in said surface i SIDNEY CLARK MOUNT.

